smpi_memory.cpp File Reference

#include <cerrno>
#include <climits>
#include <cstdint>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <deque>
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <vector>
#include <sys/mman.h>
#include <unistd.h>
#include "src/internal_config.h"
#include "src/xbt/memory_map.hpp"
#include "private.hpp"
#include "smpi_process.hpp"

Macros
#define	asan_safe_memcpy(dest, src, n)   memcpy(dest, src, n)

Functions
	XBT_LOG_NEW_DEFAULT_SUBCATEGORY (smpi_memory, smpi, "Memory layout support for SMPI")
void	smpi_get_executable_global_size ()
void	smpi_switch_data_segment (int dest)
	Map a given SMPI privatization segment (make a SMPI process active) More...
void	smpi_really_switch_data_segment (int dest)
	Map a given SMPI privatization segment (make a SMPI process active) even if SMPI thinks it is already active. More...
int	smpi_is_privatization_file (char *file)
void	smpi_backup_global_memory_segment ()
smpi_privatization_region_t	smpi_init_global_memory_segment_process ()
void	smpi_destroy_global_memory_segments ()

Variables
int	smpi_loaded_page = -1
char *	smpi_data_exe_start = nullptr
int	smpi_data_exe_size = 0
int	smpi_privatize_global_variables
static void *	smpi_data_exe_copy
static std::deque< s_smpi_privatization_region_t >	smpi_privatization_regions
static const int	PROT_RWX = (PROT_READ | PROT_WRITE | PROT_EXEC)
static const int	PROT_RW = (PROT_READ | PROT_WRITE )
static XBT_ATTRIB_UNUSED const int	PROT_RX = (PROT_READ | PROT_EXEC )

Macro Definition Documentation

asan_safe_memcpy

#define asan_safe_memcpy	(		dest,
			src,
			n
	)		memcpy(dest, src, n)

Function Documentation

XBT_LOG_NEW_DEFAULT_SUBCATEGORY()

XBT_LOG_NEW_DEFAULT_SUBCATEGORY	(	smpi_memory	,
		smpi	,
		"Memory layout support for SMPI"
	)

smpi_get_executable_global_size()

void smpi_get_executable_global_size

(

)

smpi_switch_data_segment()

void smpi_switch_data_segment

(

int

dest

)

Map a given SMPI privatization segment (make a SMPI process active)

smpi_really_switch_data_segment()

void smpi_really_switch_data_segment

(

int

dest

)

Map a given SMPI privatization segment (make a SMPI process active) even if SMPI thinks it is already active.

When doing a state restoration, the state of the restored variables might not be consistent with the state of the virtual memory. In this case, we to change the data segment.

smpi_is_privatization_file()

int smpi_is_privatization_file

(

char *

file

)

smpi_backup_global_memory_segment()

void smpi_backup_global_memory_segment

(

)

smpi_init_global_memory_segment_process()

smpi_privatization_region_t smpi_init_global_memory_segment_process

(

)

smpi_destroy_global_memory_segments()

void smpi_destroy_global_memory_segments

(

)

Variable Documentation

smpi_loaded_page

int smpi_loaded_page = -1

smpi_data_exe_start

char* smpi_data_exe_start = nullptr

smpi_data_exe_size

int smpi_data_exe_size = 0

smpi_privatize_global_variables

int smpi_privatize_global_variables

smpi_data_exe_copy

void* smpi_data_exe_copy

static

smpi_privatization_regions

std::deque<s_smpi_privatization_region_t> smpi_privatization_regions

static

PROT_RWX

const int PROT_RWX = (PROT_READ | PROT_WRITE | PROT_EXEC)

static

PROT_RW

const int PROT_RW = (PROT_READ | PROT_WRITE )

static

PROT_RX

XBT_ATTRIB_UNUSED const int PROT_RX = (PROT_READ | PROT_EXEC )

static